ul {
    list-style: none
}
div.div-a{
    padding: 10px 0;
}
a {
    color: #38b;
    text-decoration: none;
    cursor: pointer
}

a:hover {
    color: red ;
    text-decoration: none
}

a:hover * {
    cursor: pointer
}

.validity input{
    margin: 5px;
    padding: 10px;
}
.sequence td{
    width: 200px;
    border: 1px solid orange;
    font-size: 24px;
}
div.blink{
    width:100px;
    height: 100px;
}
.orange{
    background: orange;
}
/*手风琴样式*/
.accordion-body {
    width: 450px;
    margin: 100px auto;
    text-align: center;
    font-family: 'microsoft yahei',Arial,sans-serif;
    background: #222222;
}
h1 {
    border-bottom: 1px solid #555555;
    color:#fff;
    padding-bottom: 20px;
    font-size: 28px;
    font-weight:normal;
    margin-bottom: 30px;
}
dd {
    margin: 0;
    font-size: 14px;
    background: #fbfbfb;
    padding: 10px 15px;
    text-align: left;
}
dt {
    cursor: pointer;
    font-size : 18px;
    line-height: 23px;
    background: #EB852A;
    border-top: 1px solid #EFEFEF;
    box-shadow: 0 1px 0 #FFFFFF;
    font-weight: 400;
    color: #fff;
    text-align: left;
    padding: 10px 14px;
}
dt:first-child { border-top: none; }
dt:nth-last-child(2) { border-bottom: none; }
.hidden { display: none;}